Longitudinal self-balancing system cable-stayed bridge structure and construction method thereof

Abstract

The invention discloses a longitudinal self-balancing system cable-stayed bridge structure and a construction method thereof, and relates to the technical field of bridge construction, the longitudinal self-balancing system cable-stayed bridge structure comprises a cable-stayed bridge main body, a bridge tower and a first stay cable, and the bridge tower is provided with a hole penetrating in the longitudinal bridge direction. The cable-stayed bridge body comprises a main beam and a plurality of piers, the piers are arranged at intervals in the longitudinal bridge direction, and the main beam is arranged at the top ends of the piers in the longitudinal bridge direction and penetrates through the holes. The two ends of the first stay cable are fixedly connected to main beams on the two sides of the bridge tower in the longitudinal bridge direction, and the middle of the first stay cable is connected to the upper portion of the bridge tower through a roller assembly in a rolling mode. The two ends of the first stay cables are fixedly connected to the main beam, the middles of the first stay cables are connected to the upper portion of the bridge tower in a rolling mode through the roller assemblies, the first stay cables are connected to the bridge tower in a rolling mode, under the load effect, stress of the first stay cables connected to the two sides of the bridge tower is automatically balanced, and therefore the bending moment of the bottom of the bridge tower is reduced, and the service life of the bridge tower is prolonged. The scale of the bridge tower and the bridge tower foundation is reduced, and the construction cost is further saved.

Description

technical field [0001] The present application relates to the technical field of bridge construction, in particular to a longitudinal self-balancing system cable-stayed bridge structure and a construction method thereof. Background technique [0002] With the rapid growth of the national economy, the construction of large-span bridges has developed rapidly. For cable-stayed bridges, a reasonable structural system is the key to structural stress. Commonly used structural systems include tower beam restraint system, semi-floating system and elastic cable system. The tower bottom bending moments of the bridge towers of the above structural systems are all large, resulting in high construction costs. SUMMARY OF THE INVENTION [0003] The embodiments of the present application provide a longitudinal self-balancing system cable-stayed bridge structure and a construction method thereof, so as to solve the problems of large bending moment at the bottom of the pylon of the cable-s...

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Problems solved by technology

[0003] The embodiment of the present application provides a longitudinal self-balancing system cable-stayed bridge structure and its construction method to solve the problem of large bending moment at the bottom of the pylon of the cable-stayed bridge and high construction cost

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